diff options
Diffstat (limited to 'm4/m4.m4')
-rw-r--r-- | m4/m4.m4 | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/m4/m4.m4 b/m4/m4.m4 new file mode 100644 index 00000000..7d8b394a --- /dev/null +++ b/m4/m4.m4 @@ -0,0 +1,29 @@ +# Copyright 2000 Free Software Foundation, Inc. +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2, or (at your option) +# any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +# 02110-1301, USA. + +# BISON_PROG_GNU_M4 +# ----------------- +# Check for GNU m4, at least 1.3 (supports frozen files). +AC_DEFUN([BISON_PROG_GNU_M4], +[AC_PATH_PROGS(M4, gm4 gnum4 m4, m4) +AC_CACHE_CHECK(whether m4 supports frozen files, ac_cv_prog_gnu_m4, +[ac_cv_prog_gnu_m4=no +if test x"$M4" != x; then + case `$M4 --help < /dev/null 2>&1` in + *reload-state*) ac_cv_prog_gnu_m4=yes ;; + esac +fi])]) |